Dispensing apparatus for lubricant and the like



June 11,1940. M SYUG l2,203,710

f D'SPENSING APPARATUS FOR LUBRIGANT AND THE LIKE Filed Aug. 23, 1930 i2 sheets-sns 1 sa y I 32 4.2,Y 54 34 @02:571 I I, '/l 46 200 48 'zb 1 'Z8 A =`E 50 B Il" .no 4 'uw [il 1 I 12 NvENToRs ATTORNEYS l Y "June 11, 1940.

n DISPENSIIG APPARATUS FOR LUBRICANT AND THE LIKE Filed Aug. 25, 1938 2 Sheets-Sheet 2 2 ATTORNEYS MJs..You`NG u 2,203,710

Patented June 1l,

APPARATUS Fon LUmoAN'r AND 'mE Lum -Marvin S. Young, Scarsdale, N. Y., and Raymond B. Lewthwaite, Hasbrouck Heights, N. J., assignors to The Merlin Corporation, New York,

N. Y., a corporation of Delaware Application August 23, 1938, ASerial No. 226,208 z claims. (ci. zal-r1.1)`

msrENsrNG This invention relates to a new and improved apparatus and practices for dispensing liquid and particularly for dispensing liquid lubricants 4-ln the operation of service stations for motor I vehicles. The invention moreiparticularly recating oils, from normally separate and inde- 5 lates to improvements in apparatus for preventpendent supply containers into cooperating porting fraudulent substitution of grades or brands able dispensing units whereby Continuous' Prin the dispensing of lubricant, and it provides tection against fraudulent substitution of unau` new arrangements and constructions of supply thorized grades or brands of lubricant can be 1Q containers and cooperating liquid inlet systems v had from the initial manufacturing source to 10 for liquid dispensers which may be used to ccnthe iinal consumer. siderable advantage in the marketing and dis- Another object of this invention is to prevent pensingf'of lubricating oil. .Y unauthorized supplying of liquid to portable In our co-pending application, Serial No.,V liquid dispensers, particularly of the types dis- 214,448, led June 18, 1938,- we have disclosed a, closed in our prior application identified above. 15 new type of portable liquid dispensenfor usel in Stillanother object of the instant invention is4 dispensing lubricating oil and the like. comprist0 provide liquid dispensers. fOr dispensing end ing novel means for establishing communication metering liquid vfrom portable supply containers. and flow of liquids from normally separate` and' Which are equipped with. inlet systems Preventindependent supply containers into small poring the association of any supply containers in 20v able liquid dispensers, together with new arco-operation gwith-the dispensers except Sueh rangements and combinations of means in such containers as are specially constructed therefor. dispensers for pumping and metering lubricant said -inlet systems being responsive Only 't0 aetnafrom attached. portable `containers and delivertion by such containers to place the containers lng the lubricant directly to points of dispensain eO-Opelatien with the dispensers. 25

v tion in fullY view of purchasers. According to Other objects offthe Vinstant invention are to certain embodiments of our prior invention, a provide improved means fOr Placing end elempsealed supply container is placed and held in ingsupply containers in sealed communication fluid-tight .engagement with parts adjacent a with litiuid dispensers. andvte provide means for feed or control compartment ot the dispenser by looking the clamping means in inoperative posi- 3o simple movement of the container when lfixing it tion when a container is removed from the disto the dispenser. oil is pumped directly from penser. thereby preventing unauthorized conthe container through the portable dispenser .tainers frombeing placed incooperatiOn therei and into a waiting vehicle, the amount of oil with. l

discharged being metered `accurately during its Further objects of the instant invention are to 35 passage to the point of' use. When the atprovide new and useful containers for lubricattached supply container has `'been emptied the ing oil and the like which embody novel means dispenser automatically becomes inoperative, and for improving the drainage of liquid therefrom, remains inoperative and` substantially full of oil and to provide such containers fwhich are conuntil the emptied container has been removed structed speeallyto eeeperateinkeyed'relation- 40 and another supply container has been attached. ship with keyed dispensing 'systems to restrict The invention disclosed in` said prior applicathe containers to use with particular dispensing tion prvides lnumerous other new features and' systems. 4 advantages in the dispensation of lubricants, all `These and other objects and features of our as more fully set forth lin the application itself.Y invention will be made apparent by the ensuing 45 In the instantinventionas insaid prior applidetailed description of an illustrative embodication, dispensing devices are provided for use ment thereof when considered in conjunction in full view of purchasers of lubricant, and liquid with the accompanying drawings. may be fed from attached supply containers into In the drawings,

the dispensers and metered accurately as it Figure lis aperspective view of a typical dis- 50 passes from an attached container through the dispenser to the point of dispensation, such as the crankcase of an automobile.

This invention deals with new and useful im- V y provements that are particularly valuable for use with portable dispenser systems of the types disclosed in our prior application. It has as its main purpose the provision of a system for controlling the inflow of liquids, for example, lubripenser such as provided by our invention, with sealed supply containers in cooperating position thereon and with the assembly in condition for delivery of lubricating oil into the crank case of an automobile.

Figure 4. is a fragmentary plan view, partly inl section, showing a fragment of the container bottom and parts of the dispenser inlet system.

Figure 5 is a vertical cross-sectional view along the line 5 5 of Figure 4, showing details of a can bottom in sealed communication with theA inlet system.

Figure 6 is a horizontal cross-section along" the lineG-S of Figure 5.

Figure 7 is a detailed vertical cross-section along the line 1-1 of Figure 4, showing locking means for the inlet system, with the latter in its unlocked position and with a container in communicationl therewith.

Figure is a fragmentary plan view of parts of the inlet system in the inoperative position which they assume when a container is'removed therefrom. l'

Figure 9 is a vertical cross-sectiorralong line 9-9 of Figure 8. y

Figure 10 is a vertical cross-section along line Ill-I0 of Figure 8, showing the locking means in its locked position, before a properly keyed container has been placed in cooperationrwith the inlet system. e

Figure 11 is an elevation; partly in section, showing details of the piercing and cutting element of the inlet system.

Figure 12 is a perspective View ofanovel sealed container. 'e Y According to our prior inventionfinstead of dispensinglubricating oil from individual containers,'one for dispensing each unit quantity of oil, the oil may be carried to locations close to waiting vehicles in portable supply containers, which may be sealed cans of standard size that hold enough oil for several dispensations and that l yhave been packed, sealed, and branded before delivery for retail sale, and at such locations the Y containers may be placedin cooperating communication with properly constructed portable dispensers by which the oil is liberated, fed directly from the supply containers to points of dlspensation, and metered accurately during passage to such points. A i

I According to the present invention, all voi the valuable objects and features of our prior application may be realized, and in addition both the vuser and the producer of the oil are further protected against fraudulent substitution of unauthorized grades or brands of oil by the use of novel supply containers and novel dispensers having special inlet systems for establishing communication and flow of liquid between properly keyed containers and the dispensers.

By virtue of this protection against substitution, the attendant of a service station may be prevented from using a dispenser for dispensing any grade or brand of oil other .than authorized for use in that dispenser, and thus the purchaser who orders aparticular grade or brand is assured of receiving oil of the quality ordered. The producer or distributor of the oil may store it in branded containers of standard Size which are keyed according to a pre-determined plan so that they will cooperate only with authorized and properly keyed dispensers` In this way all normal methods of fraudulent substitution may be prevented from the moment the oil is packed in sealed containers until it is actually delivered to the purchaser. Y

Another important feature of the present invention is that it results in valuable savings of oil in comparison with existing practices. As in Athe case of the improvements disclosed in our prior application, the dispensers may be constructed to dispense alternately from two different attached supply containers, so that after one container has been emptied it may conveniently be leftin place to drain thoroughly before another full container is substituted. In addition, as in the prior application, means may be provided for shaping the bottoms of the containers while in place so as to promote more thorough drainage.v A further feature of the present 'application resides in the provision of f specially constructed supply containers which enable substantially complete drainage of liquid therefrom and avoid the retention of liquid by walls of the container, such' as occurs in the use of containers o f usual construction. From three to six ounces of lubricating oil are retained in each can when oil is dispensed from individual quart cans according to common practice. This oil is either discarded with the emptied cans, or a substantial amount of it may be recovered by the service station operator through special drainage of the cans. Our improved dispensers and containers minimize this loss or diversion of oil from intended channels of distribution, thus ensuring that purchasers receive the full amounts for which they have bargained and that all of the a oil be marketed vin an authorized'manner;

The vportable dispenser shown in Figure 1 of the Vaccompanying drawings is generally similar to' an embodiment illustrated in our prior applistructural members I I for mounting parts of thev dispensing mechanism, and a casing i5 with top and side walls. A feed compartment I6 is located adjacent oneeid of the carriage, this compartment having an opening I8 in its upper portion communicating with a port of the liquid inlet system, through which liquid flows from an attachedportable supply container A, and

. an opening 20 in its lower portion communicating with a'connected branch conduit 22. A similar feed compartment and inlet system may be located on another part of the carriage, for cooperation with an attachedsupply container B, and both compartments serve to receive liquid for devlivery, when the dispenser is operated, through feed lines including a vertical portion 26, a delivery hose 2l and a nozzle I2. 'I'he liquid is withdrawn from a supply container and fed from an underlying feed compartment by means ofv an' upright pump 4l having a plunger handle 46. For convenience, a handle 40 may be mounted on the pump barrel to facilitate lifting and movement of the entire dispenser assembly. The liquid advanced by the pump 40 passes through a meter 50, the dial 0f which preferably is exu posed above the top wall of casing I5. A compartment or visi-gauge 52, having transparent walls, may be provided on portion 26 to permit full vision of the stream of liquid entering hose 28 for delivery, and a bracket 54 also may be carried by portion 2B to support the hose when not Ain use. Y

In addition, the dispenser may be equippe with means for constantly keeping its feed lines full of. liquid and for preventing-entrance of air into the feed lines after a communicating supply container has been emptied. Thus the nozzle comprises a valve 34 which permits liquid to be discharged under pressure but prevents the entrance of air into the hose; the conduit 22 has a spring-pressed valve 60 which normally rests against .a seat 62 to prevent the passage of liquid out of the feed lines in the direction of compartment I6; and each feed compartment is provided with means for blocking the flow of liquid into the feed lines, in response to the level of liquid in the compartment, after an attached supply container has been emptied; such means including a valve 10 connected with a oat 14 by links fulcrumed at '|2 and adapted to move against a valve seat 16 when the float is lowered. Y

The nozzle also comprises .an internal valve, controlledby a valve handle 38, for preventing delivery of liquid except when the valve is open.

Further, the inlet system for the dispenser,

vwhen adapted for establishing communication system at one end and with opening I8 at the other end. A piercing device |02, including one or more piercing and cutting elements |04 anda tubular shank |06, projects above the inlet port and communicates with throat |00. Openings |08 are provided in shank |06 to facilitate flow of liquid from an attached supply container. A sealing member such as a resilient collar ||0 is arranged around shank |06 for sealingthe end, or bottom, wall of a container to avoid escape of liquid, and means are provided for holding the bottom wall in contact with the sealing member when the container is in dispensing position, as described below. A drip plate ||2, yieldable under pressure, surrounds'the piercing device |02, underlying a large part of, the container bottom wall. The drip plate must be pushed downwardly against the compression of a spring H4 before the pierced container wall can be placed and held in sealed relation to collar I0, so that the spring raises the body of the container after its bottom wall has been fixed in place and thus inclines the.

municates with the atmosphere at its other end through a spring-pressed valve IIB. Valve H8 admits air under atmospheric pressure to tube ||6 when the pressure in the supply container is lower than atmospheric.

The foregoing features of arrangement, construction and operation are mentioned merely as l representative of certain types of dispensers with advantage. The improvements disclosed and According to the present invention, new combinations of. dispenser inlet systems and supply containers are provided in which each inlet sysl tem is keyed to fit and cooperate with specially keyed containers, and in which the keying means prevents improperly keyed containers from being placed and held in cooperating relation to the system. Further, each inlet system comprises movable means for clamping the containers in cooperating and sealed relation thereto, and the clamping means remain in an inoperative position when a container is absent from the combination b ut are movable to an operative positionv in response to movement of a properly keyed container.

In the illustrated embodiment of these improvements, the inlet system leading to each feed compartment of the dispenser is adapted for oo operation with sealed and frangible supply containers of a` standard size, such as sealed tin cans |20 is provided around piercing device |02 in order to center such a can accurately and to hold it in centered relation when pushed downwardly onto the piercing device. Thus a can of greater diameter than the standard cannot be placed in the guide, while alcan of less diameter than the standard can hardly be centered properly.

Within the guide |20 and in the path of a can moving therein the inlet system is'provided with keying elements which further prevent the placement of containersfin cooperation with the system, regardless of their diameter, except such containers as are constructed to coact with the keying elements. For example, a series of lugs |22 project upwardly froma platform |24 adjacent which the can bottom 200 must rest when located in cooperating and sealed relation to the sealing member H0, and they prevent any ordinary can from being moved into `contact theretsystem. The tops of these lugs extend above the For cooperation with this system we provide containers which are keyed to t the keying elements of the inlet system and thus to be movable to a position adjacent platform |24 in contact with-sealing member ||0. For example, the bottom wall 200 of each container includes integral cups forming recesses 202 which correspondv in form and arrangement to the form and arrangement of lugs |22, and which fit over the lugs when the container is centered over the piercing device. (See Figures 2,.3 and 12.)

and equal spacing, are shown in the drawings,

it will be understood that the form, location and arrangement of the keying elements can be given almost innite variation, so that each producer of lubricant may use aI particular keying. system for each grade 'or brand of his products.

It will be observed that a properly keyed container may be pushed downwardly onto the inlet system, as thus'I far describe'd, and then turned,

While six lugs |22v and six recesses 202, of approximately equal size which the present improvements may be used to l if necessary, to fit recesses 202 over lugs |22. 25

tween its bottom wall and sealing member is still likely to occur. We therefore provide mechanism for clamping the can bottom in cooperating and sealed relation to the system, in response to movement of the container, for example; as follows: The platform |24 comprises a movable ring which may be rotated within a sleeve |32. A plurality of clamps |34', each having a ca'm facei'l36, are arranged to move from an inoperative position inside the tubular portion |06 of piercing Ydevice |02 to an operative position extending radially through the openings |08 and overlying the sealing member ||0. Connectingl means are provided between ring |30 and clamps |34 so that the clamps move to and from their operative position in response to movement of the ring. For example, each clamp may be formed as one leg of a U-shaped member |38, the other leg |40 of which is slidably held in a radial groove |42 in ring |30. Ring |30, members |38 and device |02 turn together aboutthe axis of the piercing device when the ring is actuated by the container A, and all turn relative to a stationary plate |44. Each leg has a pin |46 united thereto and extending into an arcuate slot |48 in plate |44. When ring |30 is turned in a counterclockwise direction, as viewed inFigures 4,6 and 8, pinsA |46 are guided toward the axis ofthe piercing device by slots |48, and the clamps ing elements of the inlet system, and then turned- |34 are moved radially to inoperative position (Figure 9). When ring |30is moved clockwise, pins |46 are guided away from the axis and clamps |34 are moved radially to operative position overlying sealing member ||0 (Figure 5i.

From the foregoing it will be apparent that when a properly keyed container is pushed downwardlymver the piercing device |02, turned, if necessary, to t its keying elements with the keyin a clockwise direction, the interengagement of the keying elements causes ring |80, sealing member ||0, piercingdevice |02and members |38 "to turn with the can, and clamps |34 are thereupon moved outwardly so that their cam faces |36 engage over the cut edge of the can bottom 200 and force the bottom into sealing engagement with member H0. Compare Figure 9 and Flgure`5. After such clamping of the can into cooperation with the inlet system, the can cannot be removed properly except by turning it in a counterclock- Wise direction to withdraw clamps 4 |34.v

In conjunction with the combinations and arrangements above described, we preferably provide locking means for locking the Vclamping means ,in inoperative position except upon actuationby properly keyed supply containers. In the illustrative embodiment, as shown in Figures 7 and 10, a locking plunger |50 is located in a weli |52 in plate |44 and a spring |54 tends to press the plunger upwardly beyond the surface of the plate. A cooperating plunger |56 is' mounted :for vertical movement in a well |58 in ring |30, plunger |56 having a part |60 extending through and above the surface of ring |30. When ring |30 isturned to bring clamps |34 into. inoperative position. .and a cooperating container is absent from the inlet system, well |52 registers with well |58 and plunger|50 is pressed in to'the latter by spring |54, thus locking ring |30 and preventing movement of the same relative'to plate |44. When a properly keyed contained is placed on "the inlet system, however, the bottom wali 200 of the container presses part |60 and plungers |50 and |56 downwardly against spring |54 and frees the ring |30 for turning movement, as shown in Figure 7 of the drawings. On the other hand, when an unkeyed or improperly keyed container is placed on the inlet system, even though'pressed down on lugs |22 ha'rd enough to engage the lugs,

the bottom of the container is held away from part |60 by the lugs and the ring remains locked by plunger |50 and will not turn. One or more of these locking mechanisms may be employed as described. In the illustrated embodiment two are provided, the second including a part |601 diametrically opposed to part |60 of the mechanism described above. Each of these parts is advantageously located near a keying element so that i containers which are not specially constructed vthe bottom thus is shaped or inclined toward openings |08. The usual tin cans, however, are difllcult to drain completelynotwithstanding the use of special drainage facilities with the inlet system.

According lto a further feature of our invention,

we provide Inew supply. containers having end or bottom walls constructed in a novel manner-to retain the requisite strength when made of light weight metal stock and to drain thoroughly when used with our improved liquid dispensers. In place of bottoms with annular reenforcing ribs such as employed in usual sheet metal can coristructions, which tendl tol hold the oil and prevent thorough drainage, our improved `frangible containers have bottom walls formed with an an- I nular series of ribs and passages 204 and 206, respectively, extending radially from adjacent the periphery of the container toward the center of the bottom wall. (See Figures 3 and 12.) 'Ihe ribs 204preferably terminate short-of thecenter to bound a flat central wall section 208 connected with passages 206-without intervening 'protuberances or projections which would impede the flow of liquid toward the center of the bottom wall. The central section is thus kept/large,

enough to span'the piercing device |02 of our dispensers and to provide space for keying elements 202, if such are to be used, while adequate strength is imparted to the wall by ribs 204.

Still another feature of the illustrated embodiment of this invention resides in the novel construction of the venting tube ||6 and in the novel arrangement thereof in combination with other elements of the keyed inlet system. In the form shown in Figure 2 of the drawings, the tube comprises telescoping sections ||6a and ll6b, the former normally extendingto a point adjacent the piercing points |04 under the influence of a compression spring ||9. When a container having a frangible bottom wall is pressed downwardly toward a position .forcooperation with'the inlet system, the central portion of the container wall forces tube section ||6a downwardly againstspring IIB until such portion is" cutout'of the wall by the piercing and cutting device |02. Thereupon, spring ||9 restores sectionaila to normal position and displaces4 the cut-out wall portion. When the containeris properly positioned for dispensing, the open en d of tube sec- -flt tion IGaextends a considerable distance above the zone where liquid flows from the container, and an eifective venting action is obtained which facilitates the flow of viscous liquids such as heavy lubricating oils.

While the improvementsfherein disclosed are especially valuable for use with sealed frangible supply containers, it should be understood that the utility of the invention is 1not restricted to such practice but extends also to the use of keyed portable supply containers -of any desired construction which maybe placed in cooperating relation to the inlet system of a dispenser and easily removed .therefrom after its content of liquid has been metered and dispensed by the operation 'of the device. Such optional containers may have preformed valved openings, making the piercing and cutting means unnecessary. It will also be apparent that the benefits of the present invention may be realized by the use of many other structural embodiments without limitation to the details of construction and arrangements` that are used in the illustrated embodiment. We

'to the art as determined by a fair construction of the claims.

We claim:

1. In combination, a liquid dispenser having a` liquid inlet system for establishing communication between the dispenser and a cooperating supply container, said system comprising a fixed guide, keying means within the guide, preventing placement of an improperly keyed container in cooperation with the system, acontainer fitting within said guide and having keying means thereon which interengage with the aforesaid keying means, and means separate from said keying means for establishing ow of liquid from the container when the container is placed within said guide.

2. In combination, a liquid dispenser having a liquid inlet system for establishing communicationy between the dispenser anda cooperating supply container, said system comprising an inlet v port, a nxed guide surrounding said port and open at one end to permit the placement of a container therein axially with respect to said port, keying means within said guide above and spaced laterally from said port for preventing the placement of an improperly keyed container in cooperation with the system, and means operative when a container having keying means complementary to the aforesaid keying means is moved within said guide for opening and fixing the conirangible container when moved toward the port,

keying means, clamping means movable relative to said port, and means responsive to rotation of a container having complementary keying means interengaged with said keying means for movingv said clamping means to an operative position holding -the container in position to deliver its v, contents into said port.

4. A liquid dispenser having a liquid inlet sys- :dispenser and cooperating supply containers, said ing means surrounding said port, keying means above said sealing means for preventingthe place-,

ment of all but properly keyed containers in sealkeying means and placed ih sealing position for e actuating said clamping means.

5. In a liquid dispenser, a keyed inlet system including an inlet port, means for opening a Wall ofv a supply container and freeing its lcontents as the container is moved `axially toward said port, keying means adjacent said port for cooperating interengagement with an opened container only when the container has complementary keying means and has been moved toward and positioned adjacent .to said port, and means responsive to movement of a properly keyed container that has been so positioned for clamping the container in a position ensuring delivery of its contents into said port.

6. In a liquid' dispenser, a keyed inlet system including an inlet port, means'for opening a wall of a supply container and freeing` its contents as the container is moved axiallyjtoward said port, container sealing means surrdunding said port, keying'means adjacent 'said port for cooperating interengagement with an opened c'ontainer only when the container has `complementarykeying means and has been moved toward' and positioned.adjacenttosaid port, and means responsive to movement of a properly keyed contairier that has been so positioned for clamping the opened wall 4of the container in sealed relation to said sealing means. v'

'1. In a liquid dispenser, a keyed inlet system including an inlet fort, ,means for opening a wall of a supply container when moved toward said port, keying means for cooperating interengagernent with complementary keying means on a keyed supply container when such a container is positioned adjacent said port, clamping means movable relative to said port for clamping the container in such position and means responsive to turning movement of such a container about the axis of Asaid, port for actuating said clamping means.

8. In a liquid dispenser, an inlet system including an inlet port, container sealing means surrounding saidport, a plurality of movable clampsfor holding a supply vcontainer in sealing contact with said sealing means and in communication with said port, when the clamps are in operative position, a plurality of keying elements above said sealing means, and means responsive to movement of ya container having keying elements interengaging with the aforesaid keying elements for moving said clamps to operative position.

9. In` a liquid dispenser, an inlet system including an inlet port, container sealing means surrounding said port, a plurality of clamps movable from an inoperative position inside said sealing means to an operative position overlying the same, piercing and cutting means extending above said port for piercing and opening a wall of a frangible container when th container is turning movement of a pierced container for moving said clamps to operative position and sis4 tem for establishing communication between the .mOVed toward the port, and means ESSDOIISYB t0 clamping the pierced-wall ofthe container in. en-

surrounding said port, piercing and cutting 1- means comprising at least one piercing point and a tubular shank extending above said port inside `of the sealing means, a plurality of openings in said tubular shank adjacent said sealing means, a plurality of clamps movable from aninoperative position within said shank to an operative position extendingthrough` said openings and overlying said sealing means, and means responsive to turning movement of a pierced container in contact with said sealing means for moving said clamps to operative position and clamping the pierced wall thereof in engagement with the sealing means.

11. In a liquid dispenser, an inlet system including an inlet port, container sealing means surrounding said port, a fixed guide around said ,sealing means for guiding a container toward said port, piercing and cutting means extendingl above said port for piercing and opening a wall of a frangible container when moved toward the port, keying means within` said guide and above said sealing means for preventing the placement of an improperly keyed container in cooperationwith the system, movable clamping means for holding .a properly keyed container in cooperation with said system, and in eans` responsive to turning movement of a properlykeyed and pierced` container for moving# said clamping means to operative and inoperative positions.

12. In a liquid dispenser, an inlet system for establishing cooperation between the dispenser and keyed supply containerasaid system includying clamping means movable from an inoperative 'positionto an operative position engaging and v.holding a properly keyed container in cooperation with the system, keying means, means for locking said clamping means in inoperative position, said locking means being released only by interengaging a properly keyed containerwith said keying means, and means responsive to the turning of acontainer so engaged for moving said clampinghmeans to operative position and holding theA containerfin cooperation with the system. ,E v

.13. An inlet system for liquid dispensers, said system vcomprising an inlet port, container piercing and cutting means adjacent said port, a resilient collar surrounding said port, a plurality o1 radially movable clamping cams, A,a rotatable annular ring having keying elements thereon adapted tointerengage with a properly keyed frangible container, and means responsive to annular ring having keying elements` thereon adapted to interengage with a properly `keyed frangible container, locking means for preventing rotation of said ring, means responsive to placement of a properly keyed container in interengagement with said keying elements for releasing said locking means, and means responsive to turning movement of a container so placed forl actuating said clamping cams and `establishing sealed communication between the container and said inlet system. v

15. A liquid dispense'rhaving a keyed liquid inlet system for establishing communication between the dispenser and keyed 'frangible supply containers, said system comprislngan inlet port, piercing and cutting means projecting above said port for piercing and opening a sealed wall of a frangible container when moved toward the port,

means yieldable under pressure for engaging and moving with the container when the container is pressed toward the port, keying means, movable clamping means adjacent said port, and means responsive to rotation of 4a container having complementary keying means interengaged with said keying means for moving said clamping means to an operative positionholding the pierced wall of the container in cooperation with the system, the remainder of the container when its pierced ywall is so held being pressed away from said clamping means by said yieldable means to ineline said wall toward said port.

16.' A supply container for liquid lubricant and the like having a generally at frangible end wall,

i' an annular series of ribs inV said wall extending '17. A supply container for liquid lubricant anni` the like having a generally ilat frangible end w`all and an annular series of radially extending ribs in said wall terminating short of the center thereoi' and bounding a substantially ilat central wall section in substantially the same plane as, radial channels between said ribs. 1 4

18. A supply container for liquid lubricant and the like having a frangible sheet-metal end wall and a plurality of keying elements formed integrally with said wall inside the margins thereof for cooperation with complementary keying elemerits of a keyed dispenserinlet system.

19. A supply container for liquid lubricant and the like having a frangible sheet-metal end wall land a plurality of keying elements die-pressed in said wall symmetrically about the center and inside the margins thereof for cobperation with complementary keying elements of a keyed dispenser inlet system. 20. A supply container for liquid lubricant and the like having a frangible end wall; an annular series of radially-extending ribs in said wall terminating short of the center thereof and bounding a substantially ilat central wall section communicating with radial drainage channels between said ribs, and a plurality of keying elements formed integrally with said central wall section for cooperation with complementary keying elements of a keyed dispenser inlet-system. 21. An inlet system for liquid dispensers comprising an inlet port for receiving liquid from an attached portable supply container, meansv projecting upwardly from said port for opening a wall of a supply container during attachment thereof to the dispenser, venting means projecting upwardly from said port for admitting pressure through the opening into an attached container, and means operative to move said venting means through said opening and into thel -f container during attachment of the container to the dispenser. y j v, l v 22. An: inlet system for liquid dispensers comprising an inlet port for receiving liquid from` an 2,203,710 attached portable supply container, piercing and cutting means including at least one piercing point and a tubulan shank extending axially from lincluding a tube section located inside of `said tubular shank, and means mounting said tube section for movement in response to movement of the container wall prior to the formation of the opening in said Wall.

23. An inlet system for liquid dispensers comprising an inlet port for receiving liquid from an attached supply container, piercing and cut-l ting means including at least one piercing point and a tubular shank extending axially from said port for opening a frangible wall of a supply container during attachment thereof to the dispenser and venting means for admitting pressure into an attached container, said venting i means including a fixed tube section, a movable tube section telescpically connected with said xed section and yieldable means normally holding said movable tube section in an extended po: sition inside of said tubular s hank while permit`` ting movement thereof toward said port duringi attachment of a container to the system.

24. A supply container for liquid lubricant dispensers and the like having a bottom wall eomprising a centrally disposed frangiblc wall section and means between the margins of said wall and said central section for draining liquid into said central section in a plurality of separate streams.

25. A supply container for liquid lubricant dis? pensers and the like having a frangible sheet metal bottom wall and a plurality of symmetrically spaced keying elements inside the margins of said wall and projecting from the planev thereof for cooperation with complementary keying elements of a keyed dispenser inlet system.

MARVIN S. YOUNG. RAYMOND B. LEWTHWAITE. 

